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| author | Con Kolivas <kernel@kolivas.org> | 2019-07-19 17:26:51 +1000 |
|---|---|---|
| committer | Con Kolivas <kernel@kolivas.org> | 2020-06-09 18:30:40 +1000 |
| commit | 55c8f2f4b7f915489f809663274fe15c14f1fd4e (patch) | |
| tree | 344454b23bbeb07cf07313cb6a3701bc9c0438da | |
| parent | 4974889ed0601aa25619fe9f0fdac905ad471872 (diff) | |
Make nohz_full not be picked up as a default config option and add recommendation to help.
| -rw-r--r-- | kernel/time/Kconfig | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index 60b4fd254c80..2960cace6719 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -66,6 +66,9 @@ config NO_HZ_COMMON depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS select TICK_ONESHOT +config NO_HZ_FULL + bool + choice prompt "Timer tick handling" default NO_HZ_IDLE if NO_HZ @@ -87,8 +90,9 @@ config NO_HZ_IDLE Most of the time you want to say Y here. -config NO_HZ_FULL +config NO_HZ_FULL_NODEF bool "Full dynticks system (tickless)" + select NO_HZ_FULL # NO_HZ_COMMON dependency depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS # We need at least one periodic CPU for timekeeping @@ -114,6 +118,8 @@ config NO_HZ_FULL transitions: syscalls, exceptions and interrupts. Even when it's dynamically off. + Not recommended for desktops,laptops, or mobile devices. + Say N. endchoice |